Vacuum cleaner



Jam 1,1946 N. B. WALES 2,392,205

VACUUM CLEANER Filed Sept. 23, 1944 Flc. 5

1 INVENToR.

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Patented Jan. 1, 1946 UNI-TE or simi*I:sv PAT ENT f orrlfc g l2,392,205: f v, l

lwisenut CLEANER Nathaniel B. Wales. New Yorke ,'YL, assignerto Norman`Bel Geddes; doing-business asNorman' Bel" Geddes andi Gompany, NewYork,N. Y.

Application.Santemhen, 1944, Serial No. 555,462

(Cl. 18.338)l` s claims:

Thisinvention relates;tol a portable'. vacuuml cleaner in whichallthevacuum cleanerelements: are. 1116013?fllatad.v Within alknapsack,. except; the nozzle and the:- flcxiblefdliot connectedthereto..

This knapsack is carried on the back of. the. operator. eliminating4 theeffort. new: required4 to pull or push the vafiuuniecleaner from point.to-V point, andv the often occurring: damage` tof. furni-v ture.. Itfurther eliminates. thezneeessityor actua allyv moving furniture to:permit'.thermovement:- of; the vacuum cleanere l It is.y essentialtodevise such a-cleaner so-V than its weight will be a. minimumand-fkto. this; enrl'-v I have.v reduced thiseweight to.- approximatelyrsevenpounds, withoutfsacriflcing its cleaning power; iut' utilizing theknapsack-sf thedust separating mee diuxn/and also .utilizing itagg-,aapneumatc support: or chassis; for the? compact. motor; drivenfan; as;-` sembly.

liurthermore,` duey te the initiation er. the: dust". separatingknapsack by the exhaust pressure` o! the fan therein,.1- utilize the.lpneumatic:v factor thus, created toy absorbthe.- vibration: of the high:Speed motor driven fan; unit fromv beine' transfmitted. to theOperator-S 1 body.

A- further. object.` ory my invention ist to: guard against a film of nedust:v from being deposited-1 on the operators:v clothing; by limiting:the-i per;v meability of the dust separating' knapsackt to: those areaswhich .are not normally. in directeonztact with the'operator-isbodyz. v

Another object` of; my inventionfis; to:A facilitate; the manualclosing. or the dust removaleeverfini the very flexible knapsacbyarranging a.. rigid.A suction tube member, extending from the major massofthe motordriven fan unit, so that the pressure required to make suchclosure is resisted by this mass and itis not necessary for the operatorto handle the dust separating knapsack during such procedure.

I attain these objects by the illustrative embodiment of my invention inthe accompanying drawing, in which:

Figure 1 is a drawing in perspective of my invention as it is carried bythe operator while in action.

Figure 2 is an enlarged rear elevation and partly shown in section toclearly show the pneumatic suspension between the motor and theoperators body. s

Figure 3 is an isometric view of the knapsack showing specically thedust removal cover in the knapsack and suction tube connectiontherethrough, wherein the exible tube is permanently attached to thedust removal cover to reduce the assembling. of: part-sl. This view alsoclearlr'shows the supporting harness` and its.. angle of suspene;

sion in relation to theinatedlknapsack.

Figure t is an; end;V elevation of. the; opposite end; ci. theknansaakxshowing theJ tiexibleand pneumaticmounting thereinof the motordriven fanunit.- as well I as i the." accessibility ofi .the` motor,yrecessed within the-contour' oi the',lnntnsack,

Similar` numerals refer toY similar parts throughout. theseverat views.`

The knapsaclt body If of' couventianaledust separating bag textureexcept a cloth: :ttm 2. shown partly in section Figure: 4.,.` and; whichmaterial,

Tnesupporting means @iy are made .adjustable by any. well known means asindicated;y et I.-I,.

andV passes-:over the .shouldersoiftheoperatonand are secured to.thebadyotthefknapsaclssothatwhen worn and: the isnansaclsy isiniiatedathe;

cloth strip 2 normally contacts the-bodr--.

The. motor driven ianunit 4;.whch is. 0f' @one Veiltnal-desisn.1`Isnos.itioned4 .inta-recess .5 formed bYf an air- .Ilermeable4cylindrical extension .B1 oi the knapsack I and which ishernieticallyaround theneriphery of the-.fan housing 1 by: a

30. bandor anysuitable means. A.spideretlsunlport, preferably of.fiexblmatcryial isseouretl totiielouter endv of. the motor driven-ianunit- Ill anais likewise. securedat21 tothe iab'ria ofA knapsack l..

Y, YAllY elfitriaal'4 SupplyV cable sie conventionally: .I eonnectedto,the-maternitne fanunit;

The lrnausackbody Ifis preferably made vliliF1 drical in form, howeverit may be elliptical, or oi any pleasing symmetrical design. It is to benoted that the support straps 3 areV secured to the knapsack I at asuitable angle thereon to permit it to hang, when inflated, so that onlythe area 2 impervious to air passage contacts the body.

The rigid suction duct I2 is secured to the fan housing 'I at I3, whichis the suction opening to the fan 29, and at the other end thereof I4,duct I2 is formed in a taper so as to make a slip-fit joint with thecentral member I5 in the dust removal cover I6. Inasmuch as theperimeter of the cover Il must form an air tightseal with its companionmember I8, which is secured to the knapsack I, as well as making a sealbetween members I4 and I5, I preferably insert into the dust removalcover I6 an annulus of fabric I9 so I l tionand servicethereof.l Y

Snap-lock fasteners 2I of any conventional det l signV hermeticallysecure'the perimeter I'I of the i i dust removal-cover to its companionsealing member I8 in the knapsack I. It should be noted that thediameter of theV dust removal cover YIIf is Y i smaller than the inateddiameter of the knapsack I so that the rigidmember I 'I will not in anyevent contactjthe body.

' Spacers "tlrformed around the'fannmtorA hous-V ing 'I keep (thecloth'cylinder 6 away from the housing, so that air may pass through thecloth t -recess and assure an added area of permeabil-- t ity in theknapsack.

Referring to Figure i Y2 the fanV discharge air;` ports 26 exhaustdirectly WithirrtheV knaps'ack.AV Y Details of the motor fan unit arenot shownl as L Y the entire assembly is the conventional type usedV incannister vacuum cleaners.

Considering the main weight of thev entire cleaning device, which is themotor driven fan4 unit,` itshould be noted that cloth sections,positionedin one 'orvmorevplanes at right angles to i eachother,and'under -ination pressure are ini terposed between this mass andthesuspensionV harness as well as theY area on which the knap-1 csackcontacts the body;` VThese -cloth sections under winflation pressureeiectively dampens Vout vibration.VV Howeventhese provisions toeliminate vibration, and support the motor weight, are inherent in thegeneral concept of my invention withoutrany'addition to the weight ofthedevice.

'I claim 1 1.'A'portab1e vacuum cleaner, adapted to -be sustained fromthev operators body, comprising an'ele'ctric motor and suction-,fanassembly, supported Within the contour ofa permeable dust bag,` anexhaust duct from said fan directed into the interior of saidbag,a-suction ductv entering one end of said-bag through a detachablevdust n removable coverrtherefonvand connecting to the suction oricerofsaid fan; yan open recess formed in the opposite Yend of lsaid permeablebag and supporting Ameans between said motor and said",

bagto Y position said `motor-fan"assembly yin said recess, so that oneend of lsaid motor accessible through the 'open endof said recess forventila- 1 2; 'A portable vacuum cleanerfadapted to besupportedffrom theoperatorsbody, comprisingY an/electric motor and 'suction fan assembly,a'- J `suctioz'i ductco'nnected to said fan,v said assembly g supportedYwithin the contourof a permeable clustv bag by a supporting membersecured to said bag onV one endof-said assembly, and by'saidv suctionduct on the other end ofsaid assembly, said suctionjduct detachablyconnected to a companrecess. n c

4. Afportablevacuum cleaner, adapted to be ion member secured into Vandpassing through a detachable dust removable `cover for said dust bag, anopen recess in the Vrst mentioned end of said dustrbag and means tohrmetically secure the inner end of said open recess of said dust bag tosaid motor-fan assembly, so that one end of said motor is accessibleVthrough said open recess in said dust bag. i

v 3. 'A portable vacuum"clea1ler,` adapted to be supported from theoperators body, comprising said fan 'and ydeta'chably connected to acompanion member secured to, and extending through, a detachable dustremovable closure fitting into n one end'of said cylindrical bag, andelectric supply means,having access to saidmotor through an open recessin theothe'rend of saidbagand sealing means tosecure saidbag to said-motorfan assembly around-the innerend of said open supported from :theoperators body, comprising a'permeable dust bag, lan electric motor-fanassembly positioned Within said'bag,V and supported Vby the'inflated'surfaces of said bag, a discharge duct from said fan, openinginto the interior of said bag, a suction duct extending from saidsuction side of s'aidfan and detachably connected to a companion 'membersecured to, and extending through, a detachabledust removable closuretting into vone'end of said bag, and electric supplymeans having faccess-to said motor through anopen recess in the other end ofY saidbag andsealing means to secure said bag to said motorfan assembly around theinner'end of said open recess. Y y Y t i n .5; A. portable vacuumcleaner, adapted to be supported jfrom! the operatorsbody,comprising Y Ian electric motor andsuction fan assembly,A posi-- Y tioned inside thecontour of a hollow permeable dustbag by `supports Vextending from eachend of said assembly. to 'theladjacent ends respectively of thesaididustV bag, oneA of" vsaid 'supports' beinghollowfandcnnected'ito`the'suction side of said suctionrfamsaid hollowsupport'passin'g through a. dust removal cover',detacl'1`ablyformedrinone of lsaid endsiofsaid bag,andadischarge duct 'from said suctionfan-infopen communication with the interior of 'said permeable dust bag.Y

Y NATHANIEL n. WALEs: Y

